Add code formatting workflows

.github/workflows/format-check.yml

@@ -0,0 +1,41 @@
+name: format-check
+
+on:
+  push:
+    branches:
+      - 'master'
+    tags: '*'
+  pull_request:
+
+jobs:
+  build:
+    runs-on: ${{ matrix.os }}
+    strategy:
+        matrix:
+          version:
+            - '1.9'
+          os:
+            - ubuntu-latest
+          arch:
+            - x64
+    steps:
+      - uses: actions/checkout@v3
+      - uses: julia-actions/setup-julia@v1
+        with:
+          version: ${{ matrix.version }}
+          arch: ${{ matrix.arch }}
+      - name: Install JuliaFormatter.jl
+        run: julia  -e 'using Pkg; Pkg.add(PackageSpec(name="JuliaFormatter"))'
+      - name: Format code
+        run: julia  -e 'using JuliaFormatter; format(".", verbose=true)'
+      - name: Format check
+        run: |
+          julia -e '
+          out = Cmd(`git diff --name-only`) |> read |> String
+          if out == ""
+              exit(0)
+          else
+              @error "Some files have not been formatted !!!"
+              write(stdout, out)
+              exit(1)
+          end'

.github/workflows/format-pr.yml

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+name: format-pr
+on:
+  schedule:
+    - cron: '0 0 * * *'
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        branch:
+          - master
+
+    steps:
+      - uses: julia-actions/setup-julia@v1
+        with:
+          version: '1.9'
+
+      - uses: actions/checkout@v3
+        with:
+          ref: ${{ matrix.branch }}
+
+      - name: Install JuliaFormatter.jl
+        shell: julia --color=yes {0}
+        run: |
+          import Pkg
+          Pkg.add("JuliaFormatter")
+
+      - name: Format code
+        shell: julia --color=yes {0}
+        run: |
+          using JuliaFormatter
+          format(".")
+
+      - name: Create Pull Request
+        id: cpr
+        uses: peter-evans/create-pull-request@v3
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          commit-message: Format code
+          title: 'Format code of branch "${{ matrix.branch }}"'
+          branch: format-${{ matrix.branch }}
+          delete-branch: true
+          labels: format
+          reviewers: mofeing
+
+      - name: Check outputs
+        run: |
+          echo "Pull Request Number - ${{ steps.cpr.outputs.pull-request-number }}"
+          echo "Pull Request URL - ${{ steps.cpr.outputs.pull-request-url }}"